[AVR][No Upstream] Add Jenkinsfile

Author: dylanmckay

Jenkinsfile

@@ -0,0 +1,14 @@
+node('master') {
+  stage('Checkout') {
+    checkout scm
+    sh 'git submodule update --init --recursive'
+  }
+
+  stage('Build') {
+      dir('build') {
+        sh '../x.py build'
+      }
+  }
+}
+
+